4-Chloro-3-nitrobenzenesulfonic acid

Name: 4-Chloro-3-nitrobenzenesulfonic acid
Brand: Vaqora Chemicals
SKU: VQ-051332

About 4-Chloro-3-nitrobenzenesulfonic acid

4-Chloro-3-nitrobenzenesulfonic acid (CAS 121-18-6) is a process intermediate or related compound of Ascorbic acid offered by Vaqora Chemicals. Its molecular formula is C6H4ClNO5S and its molecular weight is 237.62 g/mol. Alternative names: Benzenesulfonic acid, 4-chloro-3-nitro- and o-Nitrochlorobenzene-p-sulfonic acid.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Process chemists and analysts use it when developing synthetic routes to Ascorbic acid, tracking process-related impurities and validating analytical methods. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer 4-Chloro-3-nitrobenzenesulfonic acid in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

API route development
Impurity fate & purge studies
Analytical method development

Industries

Related to Ascorbic acid

View every impurity, metabolite and intermediate we list for Ascorbic acid.

Ascorbic acid impurities

Specifications & identifiers

Chemical identifiers
Product name	4-Chloro-3-nitrobenzenesulfonic acid
Catalogue No.	VQ-051332
CAS Number	121-18-6
IUPAC name	4-chloro-3-nitrobenzenesulfonic acid
Molecular formula	C₆H₄ClNO₅S
Molecular weight	237.62 g/mol
Exact mass	236.9499
InChIKey	RPKWNMFDAOACCX-UHFFFAOYSA-N
SMILES	C1=CC(=C(C=C1S(=O)(=O)O)[N+](=O)[O-])Cl
PubChem CID	67132

Physical properties
Physical form	Solid
LogP (XLogP3)	1
H-bond donors / acceptors	1 / 5
TPSA	109 Å²
Synonyms	Benzenesulfonic acid, 4-chloro-3-nitro-, o-Nitrochlorobenzene-p-sulfonic acid, 2-Nitrochlorobenzene-4-sulfonic acid, Benzenesulfonic acid,4-chloro-3-nitro-, 4-chloro-3-nitrobenzene-1-sulfonic acid, 3-Nitro-4-chlorobenzenesulfonic acid, 4-Chloro-3-nitrobenzenesulphonic acid, 2-Nitrochlorbenzol-4-sulfosaure, 1-Chloro-2-nitrobenzene-4-sulfonic acid, 4-chloro-3-nitrobenzene-1-sulphonic acid

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 4-Chloro-3-nitrobenzenesulfonic acid?

The CAS Registry Number of 4-Chloro-3-nitrobenzenesulfonic acid is 121-18-6. It is also known as Benzenesulfonic acid, 4-chloro-3-nitro-, o-Nitrochlorobenzene-p-sulfonic acid, 2-Nitrochlorobenzene-4-sulfonic acid.

What is the molecular formula and molecular weight of 4-Chloro-3-nitrobenzenesulfonic acid?

4-Chloro-3-nitrobenzenesulfonic acid has the molecular formula C6H4ClNO5S and a molecular weight of 237.62 g/mol. Its IUPAC name is 4-chloro-3-nitrobenzenesulfonic acid.

What is 4-Chloro-3-nitrobenzenesulfonic acid used for?

4-Chloro-3-nitrobenzenesulfonic acid is supplied as a characterised reference material related to Ascorbic acid. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 4-Chloro-3-nitrobenzenesulfonic acid can I order?

We supply 4-Chloro-3-nitrobenzenesulfonic acid, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Chloro-3-nitrobenzenesulfonic acid?

Yes. Every lot of 4-Chloro-3-nitrobenzenesulfonic acid is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 4-Chloro-3-nitrobenzenesulfonic acid be shipped internationally?

Yes. We export 4-Chloro-3-nitrobenzenesulfonic acid worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.